Aug 4, 2022
During the afternoon hours of August 3rd, numerous thunderstorms developed across parts of eastern Missouri and west-central Illinois, triggered by strong surface heating ahead of a surging outflow boundary. These storms developed within a strongly unstable environment, featuring MLCAPE values ranging from 2500 to as much as 4000 J/kg and largely driven by the very warm and humid boundary layer. The initial round of storms struggled to become organized. Eventually cold pool interactions drove up
Source: NOAA National Weather Service Storm Events Database (event 1057091). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Clinton County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.